List deployed webapps in Apache Tomcat

Question

I need to get a list of deployed webapps in Apache Tomcat. Also, for each webapp I need to get a list of initialized servlets and JSPs. Any ideas how this can be done?

I've found that the directory \tomcat\work\Catalina\localhost\ contains a child directory for each webapp. Could there be any other deployed webapps that aren't present there?

Answer 1

In order to get a list of deployed apps of your tomcat you just need configure user/roles and use /manager/text/list tomcat endpoint

Configure user and roles in Tomcat

Add this in your /.../.../TOMCAT_HOME/conf/tomcat-users.xml

<role rolename="manager-gui"/> <role rolename="manager-script"/> <role rolename="manager-jmx"/> <role rolename="manager-status"/> <role rolename="admin-gui"/> <role rolename="admin-script"/>  <user username="my_user" password="my_pass" roles="manager-gui,manager-script,manager-jmx,manager-status,admin-gui,admin-script"/> 

You could skip "admin-gui" & "admin-script" roles if you will not perform admin operations.

After that, restart tomcat

List apps using browser

Go to your favorite browser and enter this url:

http://some_ip:some_port/manager/text/list 

A login will appear. Enter the user/password configured in your TOMCAT_HOME/conf/tomcat-users.xml

Using command line

Just execute this:

curl -v -u my_user:my_pass http://127.0.0.1:some_port/manager/text/list 

The result should be:

OK - Listed applications for virtual host localhost /manager:running:0:manager /:running:0:ROOT /docs:running:0:docs /examples:running:0:examples /host-manager:running:0:host-manager /my_app:running:0:my_app /my_other_app:running:0:my_other_app .... * Connection #0 to host 127.0.0.1 left intact 

List apps with curl is used by a plugins related to automated tomcat deploys (Devops)

HTH

Answer 2

You can do it by using javax.management. It will look like

private Iterable<String> collectAllDeployedApps() {     try {         final Set<String> result = new HashSet<>();         final Set<ObjectName> instances = findServer()                 .queryNames(new ObjectName("Tomcat:j2eeType=WebModule,*"), null);         for (ObjectName each : instances) {             result.add(substringAfterLast(each.getKeyProperty("name"), "/")); //it will be in format like //localhost/appname          }         return result;     } catch (MalformedObjectNameException e) {          //handle     } }  private MBeanServer findServer() {     ArrayList<MBeanServer> servers = MBeanServerFactory.findMBeanServer(null);     for (MBeanServer eachServer : servers) {         for (String domain : eachServer.getDomains()) {             if (domain.equals("Tomcat")) {                 return eachServer;             }         }     }     //handle. We are not in Tomcat. }